Band-brake.



PATENTED AUG. 2, 1904.

W. N. DUFFORD.

BAND BRAKE.

APPLIGMIoN FILED 00T. 23. 1903.

H0 MODEL.

Patented August 2, 1904.

PATENT OEEICE.

VILLIAM NELSON DUFFORD, OF FINDLAY, OHIO.

BAND-BRAKE.

SPECIFICATION forming part of Letters Patent No. 766,172, dated August2, 1904.

Application filed October 23, 1903. Serial No. 178,276. (No model.)

To all whom it vit/'ty concern:

Beit known that I, VILLIAM NELSON DUF- Foni), a citizen of the UnitedStates, residing at Findlay, in the county of Hancock and State of Ohio,have invented a new and useful Band- Brake, of which the following is aspecification.

My invention i'elates to band-brakes such as ai'e used in connectionwith well-drilling machines and shown and described, but not claimed, inLetters Patent No. 735,222, granted to me August 4, 1903, and has forits objects to provide a device of this cliaractei' in which thebrake-band may without injury be reduced to compact foi'in fortransportation in moving the machine fi'om place to place and insetting' up or taking down the machine be readily eng'aged with ordisengag'ed fi'oni the operating-lever- To these ends the inventioncomprises the novel details of construction and combination of partsmore fully hereinafter described.

YIn the accompanying' drawings, Figui'e 1 is a side elevationillustrating my improved brake applied for use. Fig'. 2 is a detailsection on an enlarged scale. Fig. 3 is adetail perspectivc view. Fig. 4is a detail section on the line 4 4 of Fig. 2. Fig. 5 is a detailpei'spective view.

Referring to the drawings, 1 indicates a winding-di'um, 2 a brake-wheelfixed thereon,

and 3 the bi'ake-band surrounding the wheel.

and having' one end stapled or otherwise fixed to a stationary member 4and the other connected with the crank-arm 5 of an opei'atinglever 6.These parts, with the exception of the brake-band, may be of' theconstruction illustrated in my prior patent oi' of other prefei'i'edconstruction and arrangement, inasmuch as they constitute no part of thepi'esent invention.

The band 3 is in accordance with my invention composed of a plurality ofsections 7, 8, and 9, arranged end to end and having their meeting' endsi'ight-angularlybent to produce outwardly-projecting abutting flanges10, cai'- ried one upon the end of each of the sections and adapted tomeet in pairs.

11 indicates a series of fillingblocks or plates disposed one upon theouter face of each liange 10 and each pair of blocks being' designed toreceive between them a pair of the meeting flanges 10, the outer ends ofwhich latter are angularly bent or turned downward upon the outer edgesof the blocks, thus providing, in effect, recesses in which the latterai'e seated. The ends of the blocks oi' clamjiiiig members 11 projectbeyond the transverse edges of the flanges 10 and are perforated for thereception of clamping-bolts 12, which extend through the blocks 11 atpoints beyond the flanges and ai'e operable foi' drawing the blocks ormembers together to tightlyclanip the flanges between them, thusformingbetween the bandsections a firm rigid connection which will notyield under longitudinal stress upon the band, whereby a sectional bandis produced which in practice will be as effective as the usualcontinuous or one-piece band. lt may here be remarked that the one-piecebrakebands, such as are now in use and which ai'e composed of metal andof great length, are objectionable for the reason that when folded forti'ansportation they readily bend or kink, causing surface defects andirregularities which it is practically impossible to remove and whichwhen once foi'nied seriouslyimpair the band.

By my invention is produced a band which may be readily disjointed andpacked for transpoi'tation and by which the above-mentioned objectionsai'e in a great measure overcome, if not wholly obviated.

In oi'dei' to facilitate connection and disconnection of the ends of theband with the operating-lever' 6 and fastening-staple 4 while setting upor taking down the machine, and thus also permitting ready disengagementof the pai'ts for transportation, I fold or bend the ends of the bandback upon its body portion, as at 13 in Figs. 1 and 5, thus producing aspace or socket 14 of a width equal to the diameter of the member whichit is to engage-such, for instance, as the crank-arm 5 of the lever-andseat within said socket a i'etaining' block or element 15, removablyseciu'ed in place by bolts or the equivalent 16. The outer end wall ofthe socket 14 is cui'ved to conform to the curvature of the inembei' 5,as is also the wearing-face 1'7 of the block which lies in contact withthe member. Thus the block and wall of the socket conjointly form acircular journal-opening for receiving the member. It is apparent thatin practice the bolts 16 may be readily withdrawn and the block removed,thereby permitting engagement or disengagement of the band with themember and the band and lever being olisconnected for separatetransportation.

From the Jforegoing it will be seen that I produce a device of simpleconstruction which will be eflicient in operation and one which isadmirably adapted for the attainment of the ends in view. It is to beunderstood, however, that I do not limit myself to the precise detailsherein set forth, inasmuch as minor changes may be made therein withoutdeparting from the spirit or scope of -the invention.

Having thus described my invention, what I claim isl. A brake-bandcomprising a plurality of sections having outturned meeting flanges,clamping-plates arranged in pairs to receive the anges between them,said plates being extended and perforated at points beyond thetransverse edges of the anges and the latter being of a uniform widthrelative to the adja cent portion of the band, and clamping-boltsextended through the perforations.

2. A brake-band comprising a plurality of sections having youtturnedmeeting flanges, clamping-plates arranged in pairs to receive theflanges between them, the outer ends of the flanges being turned downpermanently upon the adjacent edges of thel plates, and means forconnecting the plates.

3. A brake-band comprising a plurality of sections having outturnedmeeting flanges, clamping-plates arranged in pairs to receive theflanges between them, the outer ends of the flanges being turned downpermanently upon the adjacent edges of the plates and the latterextended and perforated beyond the transverse edges of the flanges, andclampingbolts extended through the perforations.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two Witnesses.

WILLIAM NELSON DUFFORI).

Witnesses:

J. M. PLATT,' y EDWARD DAvIs.

